Study on mode I interlaminar fracture toughness of laminated plates considering interface angle

Author:

Ma Qiwen1,Zhang Yonggui1,Liu Jianhui1

Affiliation:

1. School of Mechanical and Electronical Engineering, LanZhou University of Technology, Lanzhou, China

Abstract

Multidirectional laminates are more widely used in practical engineering, and their fiber bridging characteristics are more obvious than unidirectional laminates. Due to the deficiency of research on the relationship between interface angle and interlaminar fracture toughness of multidirectional laminates, the numerical model of interface mode I fracture toughness of multidirectional laminates related to interface angle is modified by analyzing the difference between steady-state fracture toughness and initial fracture toughness of each interface. Meanwhile, the mode I interlaminar fracture toughness of multidirectional composite laminates under five interface modes is studied. Based on the finite element software, the cohesion model is established and verified. The analytical results are in good agreement with the experimental data, and the modified model can better verify the relationship between interface angle and interlaminar fracture toughness. At the same time, the fiber bridge force in the process of delamination along different interfaces is calculated, which provides a basis for the modified model.

Funder

Hongliu Youth Fund of Lanzhou University of Technology

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Dynamic Fracture Toughness and Damage Monitoring in Hybrid Composites;Applied Composite Materials;2023-08-16

2. Analysis of forced vibration of wind turbine blade laminated composites under delamination defects;International Conference on Optoelectronic Information and Functional Materials (OIFM 2023);2023-08-07

3. Influence of fiber orientation on thermo-mechanical response of symmetric glass/epoxy composite;Journal of the Brazilian Society of Mechanical Sciences and Engineering;2023-05-06

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